DRILL OPERATOR WAS DRILLING HOLE WITH A CORE DRILL. THREADS STRIPPED ONFITTING OF HIGH PRESSURE HOSE. SAFETY CHAIN BROKE. FITTING HIT OPERATOR ON HEAD AND KNOCKED HIM UNCONSCIOUS. OPERATOR WAS WEARING HARD HAT.
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Showing all 2AFTER COMPLETING MAINTENANCE WORK ON THE CALCINER COOLER, I,NAME DISENGAGED THE MANUAL CRANK HANDLE FROM THE DRIVE UNIT WHICH WAS LOCKED OUT. AT THAT TIME, I,NAME NOTICED THE CALCINER COOLER S TART TO ROTATE. IN AN ATTEMPT TO STOP THE ROTATION, HE RE-ENGAGED THE MANUAL CRANK HANDLE. THE FORCE OF THE ROTATION COOLER WAS TOO GREAT FOR HIM TO STOP, THEREFORE PULLING THE CRANK FROM HIS